First of all, welcome. If you have questions about not only Atari, but vintage gaming and computing in general, and even modern gaming, this is the place to come first for sure. If you account for cost, I would say either a 4 switch woody or a vader. You should be able to find one pretty cheap. I'm not a big fan of the rainbows, sometimes I have to pick them up to get the cartridge out. If you like it, you can always look into heavy sixers and others later. Good luck!